13. Beelitz-Heilstätten Hospital, Germany
If this old German hospital looks disturbing, well, it is. Just check out its chilling resume: Between 1898 and 1930, the Beelitz-Heilstätten complex served as a tuberculosis sanatorium. It also housed mustard gas and machine gun victims during World War I, including a young soldier named Adolf Hitler. The hospital later went on to be a major treatment center for Nazi soldiers during World War II, and it was used as a Soviet military hospital from 1945 until the fall of the Berlin Wall. Today, a few wards are used as a neurological rehabilitation center, although the majority of the complex is abandoned. The surgery and psychiatric wards have both been left to decay and give way to nature (and vandals), and the result looks like something straight out of American Horror Story: Asylum.
14. Canfranc International Railway Station, Spain
The glamorous Canfranc Station in the Spanish Pyrenees has had quite a dramatic life. When it opened in 1928, it was the largest rail station in Europe. But just eight years later, the spot was affected by warfare (Spanish Civil War) and a Nazi takeover (WWII). The station has been the target of several restoration efforts over the years, but it has never been able to recapture its former glory.